This Will Put The Cat Amongst The...
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No best answer has yet been selected by lemon_jelly. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.I have no science qualifications beyond 'A' Levels (which I took more years ago than I care to remember!). However, because I have now reached advanced years I have accumulated quite of lot of knowledge over and above my basic education.
I try to restrict all the answers I give on AB (not only those in the Science catgory) to topics that I have personal knowledge of. I may refresh that knowledge by looking up something from other sources myself before answering, but I personally don't much see the point of providing links to other sites. Those posing questions can easily find those sites if they wish. Essentially, if I don�t have an answer (or, at least the beginnings of an answer) myself, I leave it alone.
I also try to avoid matters of opinion, though with such a wide range of topics and an equally wide range of correspondents, I do get sucked into debates sometimes.